[OpenWrt-Devel] [PATCH] ramips: mt7621: limit dictionary size for DIR-860L due to kernel 5.4
Szabolcs Hubai
szab.hu at gmail.com
Thu Apr 16 16:07:58 EDT 2020
Hi!
Sorry, I didn't noticed that the lzma-loader thread [0] originally had
a note about DIR-860L.
I read the landed commits only which didn't talk about followups.
Sure, this dictionary size adjustment is just a workaround, the real
fix would be that updated lzma-loader.
Sorry for the noise!
Szabolcs
[0] http://lists.infradead.org/pipermail/openwrt-devel/2020-April/022834.html
Szabolcs Hubai <szab.hu at gmail.com> ezt írta (időpont: 2020. ápr. 16.,
Cs, 17:32):
>
> Snapshot images for DIR-860L after the initial kernel 5.4 landing
> (on Apr 4, 2020 commits from b51ea43f9001 to 4d979a4d1969)
> are broken: they causes "LZMA ERROR 1 - must RESET board to recover"
>
> Snapshot factory image serial log:
> ----
> Please choose the operation:
> 1: Load system code to SDRAM via TFTP.
> 2: Load system code then write to Flash via TFTP.
> 3: Boot system code via Flash (default).
> 4: Entr boot command line interface.
> 7: Load Boot Loader code then write to Flash via Serial.
> 9: Load Boot Loader code then write to Flash via TFTP.
>
> You choosed 3
>
> 0
>
> 3: System Boot system code via Flash.
> addr:80500000
> We have SEAMA, Image Size = 2424768
> Verifying Checksum ...
> Uncompressing SEAMA linux.lzma ... LZMA ERROR 1 - must RESET board to recover
> ----
>
> The local defconfig build works, also the snapshot initramfs images.
>
> The bug can be reproduced with the "CONFIG_ALL_KMODS=y" configuration.
>
> As this "LZMA ERROR 1" isn't new (e.g. 77e2bccde8f7),
> I tried to adjust the lzma dictionary parameter:
> - with "-d20" and above it causes "LZMA ERROR 1"
> - with "-d19" it boots but doesn't find the device tree (see below)
> - with "-d18" it boots fine
>
> Serial log with "-d19" lzma dictionary:
> ----
> Please choose the operation:
> 1: Load system code to SDRAM via TFTP.
> 2: Load system code then write to Flash via TFTP.
> 3: Boot system code via Flash (default).
> 4: Entr boot command line interface.
> 7: Load Boot Loader code then write to Flash via Serial.
> 9: Load Boot Loader code then write to Flash via TFTP.
> 0
>
> 3: System Boot system code via Flash.
> addr:80500000
> We have SEAMA, Image Size = 4915140
> Verifying Checksum ...
> Uncompressing SEAMA linux.lzma ... OK
>
> Starting kernel ...
>
> [ 0.000000] Linux version 5.4.32 (xabolcs at ut1804) (gcc version 8.4.0 (OpenWrt GCC 8.4.0 r12974-75f19deb3a)) #0 SMP Wed Apr 15 02:14:19 2020
> [ 0.000000] SoC Type: MediaTek MT7621 ver:1 eco:3
> [ 0.000000] printk: bootconsole [early0] enabled
> [ 0.000000] CPU0 revision is: 0001992f (MIPS 1004Kc)
> [ 0.000000] Initrd not found or empty - disabling initrd
> [ 0.000000] VPE topology {2,2} total 4
> [ 0.000000] Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
> [ 0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
> [ 0.000000] MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
> [ 0.000000] Zone ranges:
> [ 0.000000] Normal [mem 0x0000000000000000-0x0000000007ffffff]
> [ 0.000000] HighMem empty
> [ 0.000000] Movable zone start for each node
> [ 0.000000] Early memory node ranges
> [ 0.000000] node 0: [mem 0x0000000000000000-0x0000000007ffffff]
> [ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff]
> [ 0.000000] OF: fdt: No valid device tree found, continuing without
> [ 0.000000] percpu: Embedded 14 pages/cpu s26704 r8192 d22448 u57344
> [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 32480
> [ 0.000000] Kernel command line: rootfstype=squashfs,jffs2
> [ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes, linear)
> [ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
> [ 0.000000] Writing ErrCtl register=0004050c
> [ 0.000000] Readback ErrCtl register=0004050c
> [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
> [ 0.000000] Memory: 120752K/131072K available (5826K kernel code, 206K rwdata, 1252K rodata, 1280K init, 237K bss, 10320K reserved, 0K cma-reserved, 0K highmem)
> [ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
> [ 0.000000] rcu: Hierarchical RCU implementation.
> [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
> [ 0.000000] ------------[ cut here ]------------
> [ 0.000000] WARNING: CPU: 0 PID: 0 at kernel/rcu/tree.c:2998 rcu_init+0x55c/0x774
> [ 0.000000] Modules linked in:
> [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.32 #0
> [ 0.000000] Stack : 00000000 800774cc 806b0000 806b6474 80720000 806b643c 806b5590 806efdb4
> [ 0.000000] 80860000 80701248 80700d83 8064c7e4 00000000 00000001 806efd58 00000000
> [ 0.000000] 00000000 00000000 808a0000 00000000 00000030 00000027 342e3520 2032332e
> [ 0.000000] 00000000 00000000 00000000 00000000 00000000 80720000 00000000 807299f0
> [ 0.000000] 00000009 806451a4 806fe2b0 80700000 00000002 00000010 87ff0000 00000000
> [ 0.000000] ...
> [ 0.000000] Call Trace:
> [ 0.000000] [<8000b72c>] show_stack+0x30/0x100
> [ 0.000000] [<8058fac4>] dump_stack+0xa4/0xdc
> [ 0.000000] [<80028038>] __warn+0xc0/0x10c
> [ 0.000000] [<800280e0>] warn_slowpath_fmt+0x5c/0xac
> [ 0.000000] [<807299f0>] rcu_init+0x55c/0x774
> [ 0.000000] [<80720a7c>] start_kernel+0x2dc/0x55c
> [ 0.000000] [<80011044>] start_secondary+0xb0/0x3a0
> [ 0.000000] random: get_random_bytes called from print_oops_end_marker+0x2c/0x64 with crng_init=0
> [ 0.000000] ---[ end trace 0000000000000000 ]---
> [ 0.000000] ------------[ cut here ]------------
> [ 0.000000] WARNING: CPU: 0 PID: 0 at kernel/rcu/tree.c:2999 rcu_init+0x5ac/0x774
> [ 0.000000] Modules linked in:
> [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.4.32 #0
> [ 0.000000] Stack : 00000000 800774cc 806b0000 806b6474 80720000 806b643c 806b5590 806efdb4
> [ 0.000000] 80860000 80701248 80700d83 8064c7e4 00000000 00000001 806efd58 00000000
> [ 0.000000] 00000000 00000000 808a0000 00000000 00000030 0000003b 342e3520 2032332e
> [ 0.000000] 00000000 00000000 00000000 00000000 00000000 80720000 00000000 80729a40
> [ 0.000000] 00000009 806451a4 806fe2b0 80700000 00000002 00000010 87ff0000 00000000
> [ 0.000000] ...
> [ 0.000000] Call Trace:
> [ 0.000000] [<8000b72c>] show_stack+0x30/0x100
> [ 0.000000] [<8058fac4>] dump_stack+0xa4/0xdc
> [ 0.000000] [<80028038>] __warn+0xc0/0x10c
> [ 0.000000] [<800280e0>] warn_slowpath_fmt+0x5c/0xac
> [ 0.000000] [<80729a40>] rcu_init+0x5ac/0x774
> [ 0.000000] [<80720a7c>] start_kernel+0x2dc/0x55c
> [ 0.000000] [<80011044>] start_secondary+0xb0/0x3a0
> [ 0.000000] ---[ end trace f68728a0d3053b52 ]---
> [ 0.000000] NR_IRQS: 256
> [ 0.000000] Kernel panic - not syncing: Failed to find mtk,mt7621-sysc node
> [ 0.000000] Rebooting in 1 seconds..
> [ 0.000000] Reboot failed -- System halted
> ----
>
> Signed-off-by: Szabolcs Hubai <szab.hu at gmail.com>
> ---
> target/linux/ramips/image/mt7621.mk | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
> index 6e64fb8bf1..cfae103d22 100644
> --- a/target/linux/ramips/image/mt7621.mk
> +++ b/target/linux/ramips/image/mt7621.mk
> @@ -218,6 +218,7 @@ define Device/dlink_dir-860l-b1
> $(Device/seama)
> BLOCKSIZE := 64k
> SEAMA_SIGNATURE := wrgac13_dlink.2013gui_dir860lb
> + KERNEL := kernel-bin | append-dtb | relocate-kernel | lzma -d18 | uImage lzma
> KERNEL := kernel-bin | append-dtb | relocate-kernel | lzma | uImage lzma
> IMAGE_SIZE := 16064k
> DEVICE_VENDOR := D-Link
> --
> 2.17.1
>
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